Stocks mostly rose on Friday as investors focused on an upcoming keynote address by Kevin Warsh at the Jackson Hole economic symposium. Federal Reserve policymakers held rates steady at the prior meeting despite three dissents favoring a hike, while inflation eased slightly but remained above the 2 percent target following an energy price increase linked to the Iran conflict. Treasury yields stood at 4.676 percent for the 10-year note, 5.199 percent for the 30-year bond, and 4.229 percent for the 2-year note.